Backlight module, display module and assembling method thereof

ABSTRACT

The present disclosure relates to a backlight module, a display module and an assembling method thereof. The backlight module includes: a backplane; a fixing member fixedly connected to the backplane; and an insertion clamp including a mounting portion fixedly connected to the fixing member, and a clamping portion for clamping to a circuit board inserted between the fixing member and the insertion clamp.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a U.S. National Stage Application under 35U.S.C. § 371 of International Patent Application No. PCT/CN2020/105147,filed on Jul. 28, 2020, which claims priority to China PatentApplication No. 201911056111.3 filed on Oct. 31, 2019, the disclosuresof both of which are incorporated by reference herein in their entirety.

TECHNICAL FIELD

The present disclosure relates to a backlight module, a display moduleand an assembling method thereof.

BACKGROUND

During the assembling process of a liquid crystal display device in therelated art, after the assembling of the liquid crystal panel body onthe front side of a module is completed, the module needs to be turnedover to fix a screen driving board of a liquid crystal panel on the backof the module. The overturning operation is not only cumbersome andlaborious, but also likely to cause damage to the liquid crystal panelduring the overturning process. Such problems are particularly prominentin the assembling and production of large-size products such as atelevision.

SUMMARY

According to one aspect of the embodiments of the present disclosure, abacklight module is provided. The backlight module comprises: abackplane; a fixing member fixedly connected to the backplane; and aninsertion clamp comprising a mounting portion fixedly connected to thefixing member, and a clamping portion for clamping to a circuit boardinserted between the fixing member and the insertion clamp.

In some embodiments, the fixing member is fixedly connected to a backside of the backplane.

In some embodiments, the backlight module further comprises a frame or abracket, wherein the frame or the bracket is fixedly connected to thebackplane, and the fixing member is fixedly connected to the frame orthe bracket.

In some embodiments, the fixing member comprises a first plate portionand a second plate portion located on a back side of the first plateportion.

In some embodiments, the insertion clamp comprises a first insertionclamp for fixing a screen driving board of a liquid crystal panel to aback surface of the first plate portion; and the clamping portion of thefirst insertion clamp has a clamping slot for clamping to the screendriving board.

In some embodiments, the first insertion clamp further comprises aninsertion guide portion located on one side of the clamping portion awayfrom the mounting portion and having a guide slope.

In some embodiments, the insertion clamp further comprises a secondinsertion clamp for fixing a main board of a display device at aposition substantially parallel to the second plate portion, the secondinsertion clamp being substantially flush with the second plate portion;and the clamping portion of the second insertion clamp comprises a pairof hooks for clamping to the main board, the pair of hooks beingarranged oppositely and having opposite clamping directions.

In some embodiments, the fixing member further comprises a connectionportion connecting the first plate portion and the second plate portion,the first plate portion, the connection portion and the second plateportion defining a guide rail groove; and the mounting portion of theinsertion clamp is assembled in the guide rail groove with a gap andfixedly connected to the second plate portion through a fastener.

In some embodiments, the second plate portion is parallel to a lightexiting surface of the backlight module; a plane where the first plateportion is located intersects with a plane where the second plateportion is located; and the guide rail groove has a wedge-shapedcross-section.

In some embodiments, the backlight module further comprises at least oneoptical function film layer located on a front side of the backplane,and comprising a reflective sheet, wherein the fixing member and theinsertion clamp are located between the reflective sheet and thebackplane.

In some embodiments, the reflective sheet comprises a flat portion and afolded portion located at a periphery of the flat portion and foldedtoward a light exiting surface of the backlight module; and the fixingmember and the insertion clamp are located between the folded portion ofthe reflective sheet and the backplane.

In some embodiments, the backlight module further comprises: a light barlocated between the reflective sheet and the backplane, wherein a lightemitting chip of the light bar passes through a hole of the reflectivesheet.

In some embodiments, the second plate portion and the connection portionare connected in a T shape, and the second plate portion has a firstnotch facing away from the insertion clamp.

In some embodiments, the fixing member is fixedly connected to thebracket which comprises a first side portion, a second side portion, anda third side portion, wherein the first side portion and the second sideportion are opposite to each other, and two ends of the third sideportion are connected to the first side portion and the second sideportion respectively; and the fixing member is arranged on a fourth sideopposite to the third side portion, and fixedly connected to the firstside portion and the second side portion respectively through fasteners.

In some embodiments, the fixing member further comprises a foldedportion connected to the first plate portion and folded toward an endside of the backlight module, wherein the folded portion has a secondnotch for accommodating a flexible circuit connection board of theliquid crystal panel.

According to another aspect of the embodiments of the presentdisclosure, provided is a display module, comprising: the backlightmodule according to any one of the above embodiments; the circuit board;and a liquid crystal panel.

In some embodiments, the circuit board is inserted between the fixingmember and the insertion clamp of the backlight module.

In some embodiments, the circuit board comprises at least one of ascreen driving board of the liquid crystal panel or a main board of adisplay device.

According to still another aspect of the embodiments of the presentdisclosure, provided is a an assembling method of a display module,comprising: assembling a liquid crystal panel on a front side of thebacklight module according to any one of the above embodiments; andinserting a circuit board between the fixing member and of the backlightmodule without turning over the backlight module and the liquid crystalpanel.

In some embodiments, the circuit board comprises at least one of ascreen driving board of the liquid crystal panel or a main board of adisplay device.

Other features and advantages of the present disclosure will becomeapparent from the following detailed description of the embodiments ofthe present disclosure with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which constitute part of this specification,illustrate exemplary embodiments of the present disclosure and, togetherwith this specification, serve to explain the principles of the presentdisclosure.

The present disclosure may be more clearly understood from the followingdetailed description with reference to the accompanying drawings, inwhich:

FIG. 1a is a schematic cross-sectional view showing a backlight moduleof a display module according to some embodiments of the presentdisclosure;

FIG. 1b is a schematic cross-sectional view showing a backlight moduleof a display module according to other embodiments of the presentdisclosure;

FIG. 2 is an exploded schematic view showing the display module in someembodiments of the present disclosure;

FIG. 3 is a schematic view showing the assembling of a fixing member, aninsertion clamp and a circuit board according to some embodiments of thepresent disclosure;

FIG. 4a is an enlarged schematic view at A in FIG. 3;

FIG. 4b is a schematic view showing a first insertion clamp in FIG. 3;

FIG. 5a is an enlarged schematic view at B in FIG. 3;

FIG. 5b is a schematic view showing a second insertion clamp in FIG. 3;

FIG. 6 is a flowchart showing an assembling method of a backlight moduleaccording to some embodiments of the present disclosure;

FIG. 7 is a flowchart showing an assembling method of a display moduleaccording to some embodiments of the present disclosure.

It should be understood that the dimensions of the various parts shownin the accompanying drawings are not drawn according to the actualscale. In addition, the same or similar reference signs are used todenote the same or similar components.

DETAILED DESCRIPTION

Various embodiments of the present disclosure will now be described indetail with reference to the accompanying drawings. The description ofthe embodiments is merely illustrative and is in no way intended as alimitation to the present disclosure and its application or use. Thepresent disclosure may be implemented in many different forms, which arenot limited to the embodiments described herein. These embodiments areprovided to make the present disclosure thorough and complete, and fullyconvey the scope of the present disclosure to those skilled in the art.It should be noted that, unless otherwise specified, the relativearrangements of the components and steps described in these embodimentsshould be construed as merely illustrative, rather than as a limitation.

The use of the terms “first”, “second” and similar words in the presentdisclosure do not denote any order, quantity or importance, but aremerely used to distinguish between different parts. A word such as“comprise”, or variants thereof means that the element before the wordcovers the element(s) listed after the word without excluding thepossibility of also covering other elements. The terms “up”, “down”,“left”, “right”, or the like are used only to represent a relativepositional relationship, and the relative positional relationship may bechanged correspondingly if the absolute position of the described objectchanges.

In the present disclosure, when it is described that a particularelement is located between the first element and the second element,there may be an intermediate element between the particular element andthe first element or the second element, and alternatively, there may beno intermediate element between the particular element and the firstelement or the second element.

Unless otherwise defined, all terms (comprising technical and scientificterms) used herein have the same meanings as the meanings commonlyunderstood by one of ordinary skill in the art to which the presentdisclosure belongs. It should also be understood that terms as definedin general dictionaries, unless explicitly defined herein, should beinterpreted as having meanings that are consistent with their meaningsin the context of the relevant art, and not to be interpreted in anidealized or extremely formalized sense.

Techniques, methods, and apparatus known to those of ordinary skill inthe relevant art may not be discussed in detail, but where appropriate,these techniques, methods, and apparatuses should be considered as partof this specification.

The embodiments of the present disclosure provide a backlight module, adisplay module and an assembling method thereof to improve theassembling efficiency and the assembling yield during the productionprocess of a display device.

In the embodiments of the present disclosure, the “back side” of acomponent (or assembly) refers to one side of the component away from aviewer when the display device is in a conventional state of use.Correspondingly, the “front side” of a component refers to one side ofthe component proximate to a viewer. For a display device with a screenperpendicular to a horizontal plane or declined to the horizontal planewith a certain inclination angle in a state of use, such as a televisionor a painting screen, the “ground side” of a component (or assembly)refers to one side thereof more proximate to the ground, and the “skyside” refers to one side thereof further away from the ground that isopposite to the ground side. The “left side” refers to one side thereofmore proximate to a viewer's left-hand side, and the “right side” refersto one side more proximate to a viewer's right-hand side. It should benoted that the above “ground side”, “sky side”, “left side”, and “rightside” are only the position information when the display device remainsin a state of use. For a display device with a plurality of states ofuse, for example, a display device with two uses comprising a horizontalscreen and a vertical screen, when the state of use changes, forexample, the state of a horizontal screen is converted to the state of avertical screen, and the positions of various components may also changeaccordingly.

As shown in FIG. 1 a, in some embodiments of the present disclosure, abacklight module 7 is provided. The backlight module 7 comprises abackplane 6 b, a fixing member 1 fixedly connected to the backplane 6 b,and an insertion clamp 2 comprising a mounting portion 21 and a clampingportion 22. The mounting portion 21 is fixedly connected to the fixingmember 1, and the clamping portion 22 is configured to clamp to acircuit board (for example a screen driving board 83 of the liquidcrystal panel 8 shown) between the fixing member 1 and the insertionclamp 2.

The backlight module 7 further comprises at least one optical functionfilm layer 3 on a front side of the backplane 6 b.

The liquid crystal panel 8 of a display device comprises a body 81, atleast one screen driving board 83, and a flexible circuit connectionboard 82 connecting the body 81 and the screen driving board 83. Thebody 81 is a liquid crystal cell structure for screen display. Thescreen driving board 83 is also referred to as a logic board, andconfigured to output drive signals to the body 81, such as a datasignal, a control signal or a clock signal suitable for a data driver ICand a gate driver IC of the body 81. The flexible circuit connectionboard 82 is flexible and bendable, and configured to transmit a signalbetween the screen driving board 83 and the body 81.

The backlight module 7 is not limited to a specific type, and may be,for example a direct type backlight module as shown in FIG. 1a or anedge type backlight module as shown in FIG. 1 b.

As shown in FIG. 1 a, in some embodiments, the backlight module 7 is adirect type backlight module, and a light bar 4 as a light source isarranged on a back side of the at least one optical function film layer3. The at least one optical function film layer 3 comprises a reflectivesheet 31, a diffusion plate 32 and at least one optical film 33 arrangedin sequence from back side to front side. Wherein, the light emittingchip 40 (for example a light emitting diode) of the light bar 4 passesthrough a hole of the reflective sheet 31. The reflective sheet 31 andthe diffusion plate 32 are spaced apart from each other.

As shown in FIG. 1 b, in other embodiments, the backlight module 7 is anedge type backlight module. The at least one optical function film layer3 comprises a reflective sheet 31, a light guide plate 34, and at leastone optical film 33. The light bar 4 as a light source is arranged on anend side of the light guide plate 34, and the light emitting chip of thelight bar 4 faces an end surface of the light guide plate 34.

In the embodiments shown in FIGS. 1a and 1b of the present disclosure,the backlight module 7 comprises a backplane (the backplane 6 b in FIG.1a and the backplane 6 a in FIG. 1b ) and a frame 5. The backplane andthe frame 5 are fixedly connected to support and limit the opticalcomponents to be within the space defined by the backplane and the frame5. After the liquid crystal panel 8 and the backlight module 7 areassembled, the frame 5 also supports and limits the liquid crystal panel8. In these embodiments of the present disclosure, the material of theframe 5 may comprise metal or plastic.

In some embodiments of the edge type backlight module or the direct typebacklight module of the present disclosure, the fixing member and theinsertion clamp are located on the back side of the backplane. Forexample, as shown in FIG. 1 b, the fixing member 1 is fixed to thebackplane 6 a. In addition, the fixing member may also be fixed to theframe with a folded portion of the fixing member. In some embodiments,in a display device comprising such a backlight module 7, a rear shell(not shown in FIG. 1b ) is provided to cover the circuit board and othercomponents.

In some embodiments of the direct type backlight module of the presentdisclosure, as shown in FIG. 1 a, the fixing member 1 and the insertionclamp 2 are located between the reflective sheet 31 and the backplane 6b, and the fixing member 1 is fixed to the frame 5 with a folded portionthe fixing member 1. In this case, the backplane 6 b of the backlightmodule 7 may serve as a rear shell of the display device. The backplane6 b may be a flat backplane, for example, a glass backplane which istransparent, opaque, or presents a certain decorative effect. In adisplay device comprising such a backlight module 7, a rear shell is notneeded to be additionally provided, thereby implementing a lower cost, asmaller thickness and a more aesthetic effect of the display device. Thedisplay device can be perfectly attached to a wall when beingwall-mounted and thus is less likely to have dust accumulated in theback.

In the embodiments of the present disclosure, the circuit board may be ascreen driving board 83 of the liquid crystal panel 8 as shown in FIGS.1a and 1 b. In addition, the circuit board may also be a main board orthe like of a display device. Taking the display device as a televisionas an example, the functions of the main board of a television maycomprise: processing a key pressing signal, responding to a signal of aremote controller, directly or indirectly controlling backlight,receiving various video signals, converting an image into a low-voltagedifferential signal and transmitting the low-voltage differential signalto a screen driving board of the liquid crystal panel, or outputting asound signal to a speaker, and the like.

In the embodiments of the present disclosure, the mounting positions ofthe fixing member 1 and the insertion clamp may be designed according tothe fixing position required by the circuit board, so that the circuitboard is inserted between the fixing member 1 and the insertion clamp 2from an edge of the backlight module. Taking the display device as aliquid crystal television as an example, the fixing member 1 and theinsertion clamp 2 may be arranged at positions of an edge of thebacklight module 7 proximate to a ground side, which facilitates theinsertion of the circuit board from the ground side.

During the assembling process of the liquid crystal display device inthe related art, after the assembling of the liquid crystal panel bodyon the front side of a backlight module is completed, the backlightmodule needs to be turned over to fix a screen driving board of a liquidcrystal panel on the back of the backlight module with a screw. Theoverturning operation is not only cumbersome and laborious, but alsolikely to cause damage to the liquid crystal panel during theoverturning process. In addition, the main board of the liquid crystaldisplay device in the related art is also fixed on the back of thebacklight module with a screw, and similar technical problems are alsopresent.

By using the design in the embodiments of the present disclosure, duringthe assembling process of a display device, when a circuit board such asa screen driving board of a liquid crystal panel or a main board of thedisplay device is fixed by an assembler, the circuit board is insertedand fixed through an insertion clamp without the overturning of thebacklight module, which not only saves time and effort, but also mayavoid damage to the backlight module caused by the overturningoperation, thereby improving the assembling efficiency and theassembling yield of the display device.

For example, after the body 81 of the liquid crystal panel 8 isassembled on the front side of the backlight module 7, the screendriving board 83 of the liquid crystal panel 8 is directly folded to theback side of the backlight module 7 and inserted between the fixingmember 1 and the insertion clamp 2 and fixed through the insertion clamp2, without the overturning of the backlight module 7. Compared to therelated art, not only the assembling operation process is simplified,and the assembling efficiency is improved, but also damage to the liquidcrystal panel caused by the overturning operation of the backlightmodule 7 is avoided, thereby improving the assembling yield.

In the embodiments shown in FIGS. 1a and 1b of the present disclosure,the backlight module 7 comprises a frame 5. As shown in FIG. 1 a, thefixing member 1 may be fixed to the frame 5 through a folded portion ofthe fixing member 1. As shown in FIG. 1 b, in these embodiments, thefixing member 1 is fixed to the back surface of the backplane 6 a.

As shown in FIGS. 2 and 3, other structures of a display device using adirect type backlight module are provided. The backlight modulecomprises a bracket 50 comprising a first side portion 50 b, a secondside portion 50 c, and a third side portion 50 a. The first side portion50 b and the second side portion 50 c are opposite to each other, andtwo ends of the third side portion 50 a are connected to the first sideportion 50 b and the second side portion 50 c respectively. The fixingmember 1 is arranged on a fourth side opposite to the third side portion50 a, and fixedly connected to the first side portion 50 b and thesecond side portion 50 c through fasteners (not shown) respectively. Itcan be seen that, the fixing member 1, the first side portion 50 b, thesecond side portion 50 c, and the third side portion 50 a jointly definea frame-shaped structure. For example, the first side portion 50 b maybe a left side portion, the second side portion 50 c may be a right sideportion, the third side portion 50 a may be a sky side portion, and thefourth side may be a ground side. The structure of the backlight modulein these embodiments does not comprise a frame, but the frame-shapedstructure formed after the bracket 50 is fixedly connected to the fixingmember 1 can function as the aforementioned frame 5. In addition, theexploded view showing the display device shown in FIG. 2 also shows abackplane 6 b fixedly connected to the bracket 50 and the fixing member1, and also shows a front frame 6, for fixing the liquid crystal panel,fixedly connected to the bracket 50 and the fixing member 1.

As shown in FIGS. 4a, 4b, 5a and 5b , in some embodiments of the presentdisclosure, the fixing member 1 comprises a first plate portion 11 and asecond plate portion 12 located on a back side of the first plateportion 11. In addition, the fixing member 1 may further comprise aconnection portion 13 connecting the first plate portion 11 and thesecond plate portion 12. In these embodiments, the first plate portion11, the connection portion 13 and the second plate portion 12 define aguide rail groove 14. The mounting portion 21 of the insertion clamp 2is assembled in the guide rail groove 14 with a gap and fixedlyconnected to the second plate portion 12 through a fastener. Theclamping portion 22 is configured to clamp to the circuit board (forexample the screen driving board 83 or the main board 9).

The insertion clamp 2 is slidably assembled in the guide rail groove 14to facilitate the mounting and positioning of the insertion clamp 2.Thus, the accuracy of clamped assembly between the circuit board and theinsertion clamp 2 is improved. In addition, the mounting portion 21 ofthe insertion clamp 2 may also be directly fixed to the second plateportion 12 through a fastener.

The second plate portion 12 may be provided with a plurality of screwholes for fixing the insertion clamp 2 along a length direction of theguide rail groove 14, so that a certain number of insertion clamps 2 maybe mounted by selecting some screw holes according to the size andarranging position of the circuit board. This allows that the backlightmodule can be applied to display devices of a plurality ofspecifications with a wide range of application.

As shown in FIGS. 4a and 4b , in some embodiments of the presentdisclosure, the insertion clamp 2 comprises a first insertion clamp 2 ain elastic contact with the first plate portion 11, and configured tofix the screen driving board 83 of the liquid crystal panel to the backsurface of the first plate portion 11. The clamping portion 22 of thefirst insertion clamp 2 a has a clamping slot 221 for clamping thescreen driving board 83. In addition, the first insertion clamp 2 a mayfurther comprise an insertion guide portion 23 located on one side ofthe clamping portion 22 away from the mounting portion 21 and having aguide slope, so as to facilitate the insertion of the screen drivingboard 83.

In addition, as shown in FIGS. 5a and 5b , in some embodiments, theinsertion clamp 2 further comprises a second insertion clamp 2 bsubstantially flush with the second plate portion 12, and configured tofix the main board 9 of the display device at a position substantiallyparallel to the second plate portion 12. The clamping portion 22 of thesecond insertion clamp 2 b comprises a pair of hooks 222 for clampingthe main board 9. The pair of hooks 222 are arranged oppositely and haveopposite clamping directions. That is, the screen driving board 83 ofthe liquid crystal panel and the main board 9 of the display device arefixed on different planes respectively, and the screen driving board 83is connected to the main board through a flexible circuit board.

It should be noted that in the present disclosure, the term“substantially” is relative to an “absolutely desired” condition. Sincethe processing and assembling errors as well as the shape details areconsidered, “substantially” may be understood to be within a certainerror range.

By using the design in these embodiments, the space in the back of thedirect backlight module may be effectively utilized, and the structuredisplay product is more compact. The screen driving board 83 and themain board 9 are both fixed by way of insertion, the assembling of thedisplay product is convenient, and the assembling efficiency of thedisplay product is significantly improved.

In some embodiments of the present disclosure, the backlight module is adirect type backlight module. The backplane is located on a back side ofthe reflective sheet, and the fixing member and the insertion clamp arelocated between the reflective sheet and the backplane. In this way, thescreen driving board 83 and the main board may be both fixed between thereflective sheet and the backplane, thus a rear shell for protecting thecircuit board in the display device is not needed to be additionallyprovided, which allows a more aesthetic overall effect of the displaydevice. As shown in FIGS. 3 and 4 a, the reflective sheet 31 comprises aflat portion 31 a and a folded portion 31 b located at a periphery ofthe flat portion 31 a and folded toward a light exiting surface of thebacklight module. The fixing member 1 and the insertion clamp 2 arelocated between the folded portion 31 b of the reflective sheet 31 andthe backplane (not shown). The second plate portion 12 of the fixingmember 1 is parallel to the light exiting surface of the backlightmodule. The plane where the first plate portion 11 is located intersectswith the plane where the second plate portion 12 is located, thus theguide rail groove 14 has a wedge-shaped cross section. It is to be notedthat the light exiting surface of the backlight module refers to onesurface of the backlight module away from the backplane. In theseembodiments, the fixing member 1 may support the reflective sheet 31 andmay be in contact with the backplane. The fixing member 1 and theinsertion clamp 2 are located between the folded portion 31 b of thereflective sheet 31 and the backplane, and the space of a back side of aperiphery of the reflective sheet 31 is effectively utilized, which ismore favorable for a slim design of the display device.

As shown in FIG. 4a , the second plate portion 12 of the fixing member 1and the connection portion 13 are connected in a T shape. The secondplate portion 12 has a first notch 121 configured to position the lightbar 4 and facing away from the insertion clamp 2. The light bar 4 ispositioned by utilizing the first notch 121 of the second plate portion12 of the fixing member 1, which facilitates the assembling of the lightbar 4 with a simple structure and is beneficial to reduce the productioncost.

As shown in FIG. 4a , the fixing member 1 further comprises a foldedportion 15 connected to the first plate portion 11 and folded toward anend side of the backlight module. After the fixing member 1 is fixedlyconnected to the aforementioned bracket, the folded portion 15 may limitthe positions of structures such as an optical function film layer andmay also support the body of the liquid crystal panel. In addition, thefolded portion 15 has a second notch 151 for accommodating the flexiblecircuit connection board 82 of the liquid crystal panel. By designingthe second notch 151 of the folded portion 15, the flexible circuitconnection board 82 is prevented from protruding from the surface of thefolded portion 15, thereby effectively reducing damage to the flexiblecircuit connection board 82 during the assembling process.

In the embodiments of the present disclosure, the numbers of the firstinsertion clamp 2 a and the second insertion clamp 2 b are not limitedand may be determined according to the number and size of the circuitboard. The material of the fixing member may be a metal, and thematerial of insertion clamp may be plastic material with a favorableelasticity such as polycarbonate.

Referring to FIGS. 1a and 1 b, the embodiments of the present disclosurealso provide a display module comprising the backlight module 7, acircuit board, and a liquid crystal panel 8 according to any of theforegoing embodiments. For example, the liquid crystal panel 8 islocated on a front side of the backlight module 7, and the screendriving board 83 of the liquid crystal panel 8 is folded to a back sideof the backlight module 7, inserted between the fixing member 1 and theinsertion clamp 2, and fixed through the insertion clamp 2. In addition,the main board or other circuit boards of the display device may also befixed by similar insertion clamps.

When some circuit boards of the display device is fixed to a backlightmodule by an assembler, the circuit board is directly inserted and fixedthrough the insertion clamp 2 without the overturning of the backlightmodule, which saves time and effort, and avoids damage caused to thebacklight module due to the overturn operation, thereby improving theassembling efficiency and the assembling yield of the display device.

The display device is not limited to a specific product type, and maybe, for example, a television, a painting screen, a monitor, a tabletcomputer, or a notebook computer. For a large-screen display device suchas a television, the aforementioned beneficial effects are more evident.

As shown in FIG. 6, in the embodiments of the present disclosure, anassembling method of the aforementioned backlight module is alsoprovided. The assembling method comprises the following steps.

At step S11, a fixing member is fixed to a bracket. The bracketcomprises a first side portion 50 b, a second side portion 50 c, and athird side portion 50 a. The first side portion 50 b and the second sideportion 50 c are opposite to each other, and two ends of the third sideportion 50 a are connected to the first side portion 50 b and the secondside portion 50 c respectively. The fixing member 1 is arranged on afourth side opposite to the third side portion 50 a, and fixedlyconnected to the first side portion 50 b and the second side portion 50c by fasteners (not shown) respectively. It can be seen that the fixingmember 1, the first side portion 50 b, the second side portion 50 c, andthe third side portion 50 a jointly form a frame-shaped structure. Forexample, the first side portion 50 b may be a left side portion, thesecond side portion 50 c may be a right side portion, the third sideportion 50 a may be a sky side portion, and the fourth side may be aground side.

At step S12, the insertion clamp is fixed to the fixing member. Theinsertion clamp is configured to fix a circuit board inserted betweenthe fixing member and the insertion clamp. For example, a plurality offirst insertion clamps and a plurality of second insertion clamps in theforegoing embodiment are fixed to the second plate portion of the fixingmember by screws.

At step S13, a backplane is placed on a back side of the fixing memberand the insertion clamp and is fixed to the bracket and the fixingmember. For example, a glass backplane is adhesively fixed to thebracket and the fixing member through an adhesive layer.

After the step S13 is completed, various optical components may beassembled in sequence on a front side of the backplane. For example, alight bar, a reflective sheet, a diffusion plate, an optical film andthe like are assembled in sequence on a front side of the glassbackplane.

As shown in FIG. 7, in the embodiments of the present disclosure, anassembling method of a display module is also provided. The assemblingmethod comprises the following steps.

At step S21, a liquid crystal panel is assembled on a front side of thebacklight module in the foregoing embodiments.

At step S22, a circuit board is inserted between the fixing member ofthe backlight module and the insertion clamp without turning over thebacklight module and the liquid crystal panel.

Therefore, the circuit board may be fixed to the fixing member throughthe insertion clamp.

According to some embodiments of the present disclosure, the circuitboard may comprise a screen driving board of a liquid crystal panel.

According to some embodiments of the present disclosure, a main board orother circuit boards of the display device may also be fixed by aninsertion clamp with a similar structure.

It can be seen that, during the assembling process of the displaymodule, the circuit board is directly inserted and fixed on a back sidethrough an insertion clamp without turning over the backlight module,thereby improving the assembling efficiency and the assembling yield ofthe display module.

Although some specific embodiments of the present disclosure have beendescribed in detail by way of examples, those skilled in the art shouldunderstand that the above examples are only for the purpose ofillustration and are not intended to limit the scope of the presentdisclosure. It should be understood by those skilled in the art thatmodifications to the above embodiments may be made without departingfrom the scope and spirit of the present disclosure. The scope of thepresent disclosure is defined by the appended claims.

1. A backlight module, comprising: a backplane; a fixing member fixedlyconnected to the backplane; and an insertion clamp comprising a mountingportion fixedly connected to the fixing member, and a clamping portionfor clamping to a circuit board inserted between the fixing member andthe insertion clamp.
 2. The backlight module according to claim 1,wherein the fixing member is fixedly connected to a back side of thebackplane.
 3. The backlight module according to claim 1, furthercomprising a frame or a bracket, wherein the frame or the bracket isfixedly connected to the backplane, and the fixing member is fixedlyconnected to the frame or the bracket.
 4. The backlight module accordingto claim 1, wherein the fixing member comprises a first plate portionand a second plate portion located on a back side of the first plateportion.
 5. The backlight module according to claim 4, wherein: theinsertion clamp comprises a first insertion clamp for fixing a screendriving board of a liquid crystal panel to a back surface of the firstplate portion; and the clamping portion of the first insertion clamp hasa clamping slot for clamping to the screen driving board.
 6. Thebacklight module according to claim 5, wherein the first insertion clampfurther comprises an insertion guide portion located on one side of theclamping portion away from the mounting portion and having a guideslope.
 7. The backlight module according to claim 5, wherein: theinsertion clamp further comprises a second insertion clamp for fixing amain board of a display device at a position substantially parallel tothe second plate portion, the second insertion clamp being substantiallyflush with the second plate portion; and the clamping portion of thesecond insertion clamp comprises a pair of hooks for clamping to themain board, the pair of hooks being arranged oppositely.
 8. Thebacklight module according to claim 4, wherein: the fixing memberfurther comprises a connection portion connecting the first plateportion and the second plate portion, the first plate portion, theconnection portion and the second plate portion defining a guide railgroove; and the mounting portion of the insertion clamp is slidablyassembled in the guide rail groove and fixedly connected to the secondplate portion through a fastener.
 9. The backlight module according toclaim 8, wherein: the second plate portion is parallel to a lightexiting surface of the backlight module; a plane where the first plateportion is located intersects with a plane where the second plateportion is located; and the guide rail groove has a wedge-shapedcross-section.
 10. The backlight module according to claim 1, furthercomprising: at least one optical function film layer located on a frontside of the backplane, and comprising a reflective sheet, wherein thefixing member and the insertion clamp are located between the reflectivesheet and the backplane.
 11. The backlight module according to claim 10,wherein: the reflective sheet comprises a flat portion and a foldedportion located at a periphery of the flat portion and folded toward alight exiting surface of the backlight module; and the fixing member andthe insertion clamp are located between the folded portion of thereflective sheet and the backplane.
 12. The backlight module accordingto claim 10, further comprising: a light bar located between thereflective sheet and the backplane, wherein a light emitting chip of thelight bar passes through a hole of the reflective sheet.
 13. Thebacklight module according to claim 8, wherein the second plate portionand the connection portion are connected in a T shape, and the secondplate portion has a first notch facing away from the insertion clamp.14. The backlight module according to claim 3, wherein: the fixingmember is fixedly connected to the bracket which comprises a first sideportion, a second side portion, and a third side portion, wherein thefirst side portion and the second side portion are opposite to eachother, and two ends of the third side portion are connected to the firstside portion and the second side portion respectively; and the fixingmember is arranged on a fourth side opposite to the third side portion,and fixedly connected to the first side portion and the second sideportion respectively through fasteners.
 15. The backlight moduleaccording to claim 14, wherein: the fixing member further comprises afolded portion connected to the first plate portion and folded toward anend side of the backlight module, wherein the folded portion has asecond notch for accommodating a flexible circuit connection board ofthe liquid crystal panel.
 16. A display module, comprising: thebacklight module according to claim 1; the circuit board; and a liquidcrystal panel.
 17. The display module according to claim 16, wherein thecircuit board is inserted between the fixing member and the insertionclamp of the backlight module.
 18. The display module according to claim16, wherein the circuit board comprises at least one of a screen drivingboard of the liquid crystal panel or a main board of a display device.19. An assembling method of a display module, comprising: assembling aliquid crystal panel on a front side of a backlight module, thebacklight module comprising a backplane, a fixing member fixedlyconnected to the backplane, and an insertion clamp, the insertion clampcomprising a mounting portion fixedly connected to the fixing member,and a clamping portion; and inserting a circuit board between the fixingmember and the clamping portion without turning over the backlightmodule and the liquid crystal panel.
 20. The assembling method accordingto claim 19, wherein the circuit board comprises at least one of ascreen driving board of the liquid crystal panel or a main board of adisplay device.